If someone asked me to pick one map that best demonstrates what Portal is all about then I think it would be this one. Everything worked smoothly, and the difficulty ratchets up nicely with each room while still maintaing the same core concept.

It was definitely on the easy side, but at least partially because I've played so many of your other maps. That is except for the last room, which I figured out completely by accident. I don't know how long I might have been there otherwise.